[HUDI-1040] Make Hudi support Spark 3#2208

Merged

umehrot2 merged 5 commits intoapache:masterfrom

zhedoubushishi:wenningd/spark3-5

Dec 9, 2020

Commits on Dec 8, 2020

Fix flaky MOR unit test
Wenning Ding
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Update Spark APIs to make it be compatible with both spark2 & spark3
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Refactor bulk insert v2 part to make Hudi be able to compile with Spark3
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Add spark3 profile to handle fasterxml & spark version
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Create hudi-spark-common module & refactor hudi-spark related modules
Wenning Ding
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